The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China

Daily runoff is the data to estimate the water resources in a river. In many catchments, the daily discharge is not well observed. Flow duration curve is an important characteristic of daily runoff, and important for the design of water conservancy projects. In the ungauged catchments, the evaluatio...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jinkai Luan, Dengfeng Liu, Mu Lin, Qiang Huang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	climate distribution function flow duration curve geomorphology log normal model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/df1aea1e67c84ffaa45dff517d59bfc3
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:df1aea1e67c84ffaa45dff517d59bfc3
record_format	dspace
spelling	oai:doaj.org-article:df1aea1e67c84ffaa45dff517d59bfc32021-11-05T19:07:52ZThe construction of the flow duration curve and the regionalization parameters analysis in the northwest of China2040-22442408-935410.2166/wcc.2021.324https://doaj.org/article/df1aea1e67c84ffaa45dff517d59bfc32021-09-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/6/2639https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Daily runoff is the data to estimate the water resources in a river. In many catchments, the daily discharge is not well observed. Flow duration curve is an important characteristic of daily runoff, and important for the design of water conservancy projects. In the ungauged catchments, the evaluation of distribution functions and the parameters of flow duration curve is a helpful method to understand the characteristics of the flow. This study uses data from 19 hydrological stations to evaluate the applicability of 11 distribution functions to simulate flow duration curves in the northwest of China. The fitted flow duration curves are evaluated by Nash-Sutcliffe efficiency, the root mean square relative error and the coefficient of determination. The evaluation shows that, among the 11 distribution functions, the log normal model is the most suitable model to construct flow duration curves of 19 hydrological stations. Based on a multivariate linear regression model, a regional model of distribution parameters is constructed, including functions of watershed geomorphologic and climatic characteristics. The analysis of Baijiachuan hydrological station shows that the parameters a and b showed a decreasing trend. This study presents an innovative approach to evaluate regionalized parameters of flow duration curves considering the impacts of geomorphologic and climatic characteristics. HIGHLIGHTS Daily discharge at 19 hydrological stations in the northwest of China are used to evaluate the applicability of 11 distribution functions to simulate flow duration curves.; The log normal distribution function is the most suitable model to construct flow duration curves.; A regional model of distribution parameters is constructed, and they are functions of watershed geomorphologic and climatic characteristics.;Jinkai LuanDengfeng LiuMu LinQiang HuangIWA Publishingarticleclimatedistribution functionflow duration curvegeomorphologylog normal modelEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 6, Pp 2639-2653 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate distribution function flow duration curve geomorphology log normal model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	climate distribution function flow duration curve geomorphology log normal model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Jinkai Luan Dengfeng Liu Mu Lin Qiang Huang The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China
description	Daily runoff is the data to estimate the water resources in a river. In many catchments, the daily discharge is not well observed. Flow duration curve is an important characteristic of daily runoff, and important for the design of water conservancy projects. In the ungauged catchments, the evaluation of distribution functions and the parameters of flow duration curve is a helpful method to understand the characteristics of the flow. This study uses data from 19 hydrological stations to evaluate the applicability of 11 distribution functions to simulate flow duration curves in the northwest of China. The fitted flow duration curves are evaluated by Nash-Sutcliffe efficiency, the root mean square relative error and the coefficient of determination. The evaluation shows that, among the 11 distribution functions, the log normal model is the most suitable model to construct flow duration curves of 19 hydrological stations. Based on a multivariate linear regression model, a regional model of distribution parameters is constructed, including functions of watershed geomorphologic and climatic characteristics. The analysis of Baijiachuan hydrological station shows that the parameters a and b showed a decreasing trend. This study presents an innovative approach to evaluate regionalized parameters of flow duration curves considering the impacts of geomorphologic and climatic characteristics. HIGHLIGHTS Daily discharge at 19 hydrological stations in the northwest of China are used to evaluate the applicability of 11 distribution functions to simulate flow duration curves.; The log normal distribution function is the most suitable model to construct flow duration curves.; A regional model of distribution parameters is constructed, and they are functions of watershed geomorphologic and climatic characteristics.;
format	article
author	Jinkai Luan Dengfeng Liu Mu Lin Qiang Huang
author_facet	Jinkai Luan Dengfeng Liu Mu Lin Qiang Huang
author_sort	Jinkai Luan
title	The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China
title_short	The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China
title_full	The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China
title_fullStr	The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China
title_full_unstemmed	The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China
title_sort	construction of the flow duration curve and the regionalization parameters analysis in the northwest of china
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/df1aea1e67c84ffaa45dff517d59bfc3
work_keys_str_mv	AT jinkailuan theconstructionoftheflowdurationcurveandtheregionalizationparametersanalysisinthenorthwestofchina AT dengfengliu theconstructionoftheflowdurationcurveandtheregionalizationparametersanalysisinthenorthwestofchina AT mulin theconstructionoftheflowdurationcurveandtheregionalizationparametersanalysisinthenorthwestofchina AT qianghuang theconstructionoftheflowdurationcurveandtheregionalizationparametersanalysisinthenorthwestofchina AT jinkailuan constructionoftheflowdurationcurveandtheregionalizationparametersanalysisinthenorthwestofchina AT dengfengliu constructionoftheflowdurationcurveandtheregionalizationparametersanalysisinthenorthwestofchina AT mulin constructionoftheflowdurationcurveandtheregionalizationparametersanalysisinthenorthwestofchina AT qianghuang constructionoftheflowdurationcurveandtheregionalizationparametersanalysisinthenorthwestofchina
_version_	1718444073079013376

The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China

Ejemplares similares